Xuan had 97 cheese and strawberry biscuits. After giving away
14 of her cheese biscuits and 13 of her strawberry biscuits, she had an equal number of cheese and strawberry biscuits. How many strawberry biscuits did she have at first?
| |
Cheese biscuits |
Strawberry biscuits |
Total |
| Before |
4 u |
3 u + 13 |
97 |
| Change |
- 1 u |
- 13 |
|
| After |
3 u |
3 u |
|
Fraction of the cheese biscuits left
= 1 -
14=
34 The number of cheese and strawberry biscuits in the end is the same.
Total number of biscuits at first
= 4 u + 3 u + 13
= 7 u + 13
7 u + 13 = 97
7 u = 97 - 13
7 u = 84
1 u = 84 ÷ 7 = 12
Number of strawberry biscuits at first
= 3 u + 13
= 3 x 12 + 13
= 36 + 13
= 49
Answer(s): 49
